CN106533209A - Hybrid boost-bypass function in two-stage converter - Google Patents
Hybrid boost-bypass function in two-stage converter Download PDFInfo
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- CN106533209A CN106533209A CN201610827173.XA CN201610827173A CN106533209A CN 106533209 A CN106533209 A CN 106533209A CN 201610827173 A CN201610827173 A CN 201610827173A CN 106533209 A CN106533209 A CN 106533209A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
A boost-bypass converter includes a boost inductor coupled between an input and an output of the boost-bypass converter. A bypass diode is coupled between the input the output of the boost-bypass converter. A boost switching element is coupled to the boost inductor, and is coupled to be activated during a first interval in each line half cycle of an input voltage to boost an output voltage at the output of the boost-bypass converter. The boost switching element is coupled to be deactivated during a second interval in said each line half cycle such that the output voltage drops towards the input voltage. The output voltage is coupled to follow the input voltage during a third interval in said each line half cycle of the input voltage. Energy is transferred between the input and the output of the boost-bypass converter through the bypass diode during the third interval.
Description
Technical field
The present invention relates generally to power supply, is in particular, but not exclusively related to the new topological sum control of switched-mode power supply
System.
Background technology
Switched-mode power supply is used for needing adjusted direct current (dc) voltage for various household electrical appliance or the industry of its operation
Electrical equipment.Exist various known exchanges for carrying out the output quantity (voltage or electric current) of regulation power supply by using control method-
Direct current (offline) converter topologies, above-mentioned control method such as be PWM (pulse width modulation), PFM (pulse frequency modulated) or
Person's break-make control/pulse-skip.
In order to exchange the docking of (ac) network with low frequency (such as 60 or 50Hz), AC-DC prime converter is generally included,
To provide and the efficient Power Exchange of AC network, and PFC (PFC) is played in the interface to AC network
The effect of converter.
Two-stage converter is typically favourable, and using prime PFC boost device (as the power factor school with AC network
Positive interface) mode that cascaded with DC-to-dc converter (as voltage-releasing voltage stabilizer) used.Prime PFC boost device is received and is passed through
The rectified AC sine waveform of bridge rectifier, and which is realized by the high frequency (HF) of power switch switch to pass through
Inductance energy transmitting element transfers its energy to second level DC-to-dc converter.
The content of the invention
According to an aspect of the present invention, there is provided a kind of boosting-bypass of the first order in device as two-stage power conversion turns
Parallel operation, the boosting-bypass converter include：Boost inductor, the boost inductor are coupled in the boosting-bypass converter
Input and the output of the boosting-bypass converter between, wherein, the input voltage of the boosting-bypass converter be by
It is coupled to the rectification incoming line sinusoidal voltage received in the input of the boosting-bypass converter；Bypass diode,
The bypass diode be coupled in the input of the boosting-bypass converter with described in the boosting-bypass converter
Between output；And, the boosted switch element of the boost inductor is coupled to, wherein, the boosted switch element is coupled to
Enable into the first interim interim of each line half cycle in the input voltage so that the boosting-bypass converter
Output voltage at the output is raised, and wherein, the boosted switch element is coupled in the described every of the input voltage
The second interim interim of individual line half cycle disables, and wherein, the output voltage of the boosting-bypass converter is coupled to
Into when the boosting-bypass converter the output voltage be more than the input voltage when second interim towards
The input voltage declines, and wherein, the output voltage of the boosting-bypass converter is coupled to when the input voltage
In each circuit described in the input voltage when roughly equal with the output voltage and described boosted switch element is disabled
3rd interim of half period follows the input voltage, wherein, in the 3rd interim energy by the bypass
Diode is transmitted between the input and the output of the boosting-bypass converter.
According to a further aspect in the invention, there is provided a kind of power converter, the power converter includes boosting-bypass conversion
Device and the second level flyback converter with the boosting-bypass converter cascade,
Wherein, the boosting-bypass converter includes：Boost inductor, the boost inductor be coupled in the boosting-
Between the input and the output of the boosting-bypass converter of bypass converter, wherein, the boosting-bypass converter is defeated
It is the rectification incoming line sinusoidal voltage for being coupled to receive in the input of the boosting-bypass converter to enter voltage；
Bypass diode, the bypass diode is coupled in the input of the boosting-bypass converter and the boosting-bypass turns
Between the output of parallel operation；And, it is coupled to the boosted switch element of the boost inductor, wherein, the boosted switch
Element is coupled to the first interim of each line half-cycle in the input voltage and enables so that the boosting-bypass
Output voltage at the output of converter is raised, and wherein, the boosted switch element is coupled in the input voltage
Described each line half cycle interim the second interim disable, wherein, the output voltage is coupled to when the output
Voltage declines towards the input voltage in second interim when being more than the input voltage, wherein, the output electricity
In institute when pressure is coupled to when the input voltage and the output voltage is roughly equal and the boosted switch element is disabled
The 3rd interim for stating each line half-cycle of input voltage follows the input voltage, wherein, the described 3rd
Interim energy is passed between the input and the output of the boosting-bypass converter by the bypass diode
Pass,
Wherein, the flyback converter includes the input of the output for being coupled to the boosting-bypass converter, its
In, the flyback converter also includes：Energy transfer element, the energy transfer element are coupled in the flyback converter
The input and the output of the flyback converter between；Flyback switch element, the flyback switch element are coupled to institute
State energy transfer element；And, controller, the controller are coupled to control the switch of the flyback switch element, to adjust
Amount of energy saving passes through the institute of the energy transfer element to the flyback converter from the input of the flyback converter
State the transmission of output.
Description of the drawings
The embodiment for describing the non-limiting and nonexhaustive of the present invention with reference to the following drawings, wherein, unless otherwise saying
Bright, otherwise in all each views, similar reference refers to similar part.
Fig. 1 is the sketch map of an example of the two-stage power conversion device for showing teaching of the invention, the two-stage work(
Rate converter include with the second level flyback converter cascade, with the prime converter for mixing boosting-bypass functionality.
Fig. 2 shows the voltage and current waveform for mixing boosting-bypass functionality for prime of teaching of the invention.
Fig. 3 A show the example of the control block for first order stepup transformer of teaching of the invention.
Fig. 3 B show that the first order for being cascaded with second level flyback converter of teaching of the invention is mixed
The example of the control block of boosting-bypass functionality.
In all multiple views in the accompanying drawings, corresponding reference refers to corresponding part.Those skilled in the art
It will be understood that, the element in accompanying drawing is illustrated to simplify and understand, and is not drawn necessarily to scale.For example, in figure
The size of a little elements may be exaggerated relative to other elements, to help promote the understanding of each embodiment to the present invention.
Additionally, generally do not describe useful in viable commercial embodiment or necessary common known element, in order to
Checking for each embodiment to the present invention is hindered less.
Specific embodiment
In the following description, illustrate many details to provide thorough understanding of the present invention.However, to this area
It is evident that implementing the present invention need not adopt these details for those of ordinary skill.In other cases, in order to avoid
The fuzzy present invention, is not described in known material or method.
" embodiment ", " embodiment ", " example " or " example " is referred in full through this specification
It is meant that the special characteristic, structure or the characteristic that describe with reference to the embodiment or example are included in of the invention at least one in fact
Apply in scheme.Therefore, through this specification in the word " in one embodiment " of each place appearance, " in an embodiment party
In case ", " example " or " example " identical embodiment or example may not be all referred to.Additionally, specific feature, structure
Or characteristic can in one or more embodiments or example in any suitable combination and/or sub-portfolio combine.Specifically
Feature, structure or characteristic can be included in its of integrated circuit, electronic circuit, combinational logic circuit or function described by offer
In his suitable part.Moreover it will be understood that with provided herein is figure be to be solved to those of ordinary skill in the art
Release, and these figures are not necessarily drawn to scale.
As will be discussed in further detail below, disclose for the mixing boosting-bypass functionality in two-stage converter
Novelty topological sum control technology.Compare with large value capacitor with common bridge rectifier, teaching of the invention
Exemplary first order boost converter save space as the demand to boost capacitor is very little.For example, according to this
The exemplary first order boost converter of the teaching of invention is run with off-gauge boosting rectifier control, and the boosting rectifier control is by making first
The boost function of level boost converter only in most short in each half line cycles needs the time operation providing two level conversions
The efficiency of the increase of device.What first order boost converter was run in each half line cycles most short needs the time from order to
Two-stage transducers provide enough input voltages and need the amount of the energy being stored in boosting output capacitor to limit.In boosting
Need to be stored in boosting output capacitor during the time interval that function has stopped and first order boost output voltage declines
Energy, this occurs near the zero crossing of main supply.
Even if it should be noted that the first order boost converter operation shortest time increase the efficiency of two-stage converter,
But the power factor (PF) of input declines.However, teaching of the invention still can optimize first order boost converter
Run time balancing following two targets：(1) increase efficiency relative to " standard " high PF boost converters；And (2) are protected
Hold and meet the minimum power factor for necessarily requiring.In fact, using teaching of the invention with mixing boosting-bypass work(
The exemplary two-stage converter of energy, still obtains the power factor of PF ≈ 0.7, but with bridge rectifier and Large Copacity electricity
In the typical flyback converter of container, power factor is generally reduced to the power factor of PF ≈ 0.5.
In order to illustrate, Fig. 1 shows an example of the two-stage power conversion device 100 of teaching of the invention, and this two
Scale power converter include with the second level flyback converter cascade, with mix boosting-bypass functionality prime boosting turn
Parallel operation.Power converter 100 includes rectifier bridge 110, and the rectifier bridge is coupled to receive V in inputAC102 and generate ginseng
Examine the rectification output V that ground connection is with reference to 101REC111.Center is formed with two resistors 103 and 104 of input AC lines in parallel
Point, the central point are coupled to the terminal 155HTS of controller 150 by 3rd resistor device 105, to follow the trail of the sinusoidal electricity of incoming line
Press and make the particular point in time on line half-cycle synchronous with zero crossing.All-wave sine commutating voltage VREC111 be applied to can
The filter inductor L of choosingF112 and filter condenser CF120。
In one example, boosted switch element is bipolar junction transistor BJT QB125, the bipolar junction transistor
Receive the base drive control signal from controller terminal BBD (boosting base drive) 158.Supervise on coupling inductor 115
Survey and apply to boost inductor LBThe boost inductor current I of 114 iron coreL113, with by 117 He of resitstance voltage divider
Detect inductor zero current to generate boost feedback BFB 156 on 116 (to control the critical conduction mode that boosts, CrM).
It is in sense resistor 119 in return line and boost current is sensed, and the boost current is passed through
Resistors in series 122 applies to the terminal BCS 152 of controller 150.In the case where electric current is excessive, the forward direction of diode 118
Pressure drop (such as 0.6V) can limit the pressure drop in sense resistor 119 and BCS terminals.It is understood that in this example, control
Device processed 150 is also driven including emitter stage, the transmitting of the internal switch of the emitter stage drive control by connecting with terminal BED 154
Electrode current.The ground terminal Gnd 151 of controller 150 is with reference to main power source ground 101.
130 output voltage of first order stepup transformer at 138 two ends of large value capacitor is applied to second level inverse-excitation type conversion
Device 160.Control signal for second level flyback converter is included in controller 150, and reference is coupled to control
Mainly the 101 of device ground terminal Gnd 151.
As depicted shown in example, first order stepup transformer 130 is coupled to receive from the complete of bridge rectifier 110
Ripple rectified sinusoidal voltage waveform VREC111.The critical piece of first order boost converter 130 includes：Boost inductor LB 114、
For bipolar junction transistor QB125 boosted switch element, booster diode DB134 and boosting output large value capacitor
138.High frequency HF switching noises are bypassed by filter condenser 120.Coupling inductor 114 and 115 can be in electric resistance partial pressure
I is detected on device 116 and 117L113 zero inductance device electric current.Zero inductance device current signal from node 157 is coupled to control
The boost feedback terminal BFB 156 of device 150, to provide critical conduction operational mode as first order stepup transformer 130.
It should be noted that first order stepup transformer is commonly used for providing Active PFC at incoming line terminal
PFC, and it is typically coupled to low-frequency sinusoidal AC network.However, exemplary the two of disclosed teaching of the invention
In level conversion device, the non-standard control of first order stepup transformer is disclosed, and the non-standard control can be provided except boost converter
Additional benefit outside traditional PFC operations.Bypass diode Dbp132 are typically used as to main boosting two in other solutions
Pole pipe DB134 protection, to bypass inrush current during startup as boosting output large value capacitor (such as capacitor 138)
Charge, or strangulation can damage any input wave of input block (such as bridge rectifier 110 or filter condenser 120) originally
Gush.
By diode Dbp132 bypass surge current can protect main booster diode D during inrush currentB
134.Main booster diode DB134 typically (such as Schottky, SiC or other are fast of the fast diode with low forward voltage drop
Fast type diode), such diode may it is any pour in or surge current during it is undermined.In disclosed prime liter
In the exemplary non-standard operation of depressor 130, bypass diode Dbp132 work in a different manner, and in each circuit
All the time turn in the major part of half period, as below by described in the waveform in Fig. 2.
It is understood that controller 150 is to boosting bipolar transistor switch QB125 provide Dual Drive, with drive from
The boost transistor base control signal of terminal BBD (boosting base drive) 158 and the terminal 154 from controller 150
Boost transistor emitter stage drives BED.In some instances, boost transistor switch QBResistor 135 in 125 base stage
Pullup resistor can be played during starting.
In output voltage and the flyback energy transmission unit of the first order stepup transformer 130 at 138 two ends of boosting large value capacitor
Part is applied to second level flyback converter 160 in parallel, and the flyback energy transmitting element is depicted as transformer T1 170.
Flyback energy transmitting element T1 170 is actually coupling inductor, and which is commonly known as flyback transformer.Armature winding 171 with
Flyback switch element (for example, Mosfet MF165) connect, the flyback switch element receives the terminal FGD 166 of controller 150
On grid control signal.
Flyback transformer T1 170 has armature winding 171, secondary windings 172 and assists winding 173.Assists winding
173 provide flyback feedback on the terminal 164 of controller 150 by the resitstance voltage divider 176/178 being optionally scaled down
Signal FFB.Additionally, assists winding 173 passes through commutation diode 174 and capacitor 175 in terminal VDDCarry to controller on 168
For dc source.
The all control signals provided by assists winding 173 and controller power source VDD168 equal reference controller ground 151,
The controller ground can be coupled to mainly 101.From flyback output flyback feedback information by the auxiliary on T1 170 around
Organize 173, retrieved as AC signal on resitstance voltage divider 176 and 178.The AC signal on terminal 164FFB is taken
Double-point information is carried to controller 150.The negative part (due to contrary coiling direction of winding 171 and 173) of the alternating-current pulse is provided
For the flyback input voltage information of boost output voltage.
Positive part from the alternating-current pulse of assists winding 173 was represented during the turn-off time of flyback switch element 160
It is transferred to the energy (in opposite direction due to winding 171 and 172) of secondary windings 172.The positive part of alternating-current pulse generates anti-
Sharp feedback signal is adjusted for output voltage.In flyback converter sense resistor 161 on the terminal FCS 162 of controller 150
Upper sensing flyback switching current.Controller 150 is generated for boosted switch element Q by processing all of sensing signalB
125 drive signal BBD 158 and be used for flyback switch element MF165 drive signal FGD166.
Fig. 2 show teaching of the invention for the first order converter with mixing boosting-bypass functionality
Voltage and current waveform.Transverse axis show it is with the sinusoidal line cycle as scale, for multiple continuous half line cycles (examples
Such as, TL/ 2 212 and the time 210 213).The longitudinal axis of upper curve Figure 200 shows the output electricity of first order boost converter
Pressure VBoosting220, output voltage voltage present on the capacitor 138 in Fig. 1.The longitudinal axis of lower graph 250 shows logical
Cross the conduction electric current I of first order boost converterConduction240。
First order boost converter output voltage VBoosting220 are made up of three different parts, these three different parts
I.e.：224 (the first interval τsB215, boosting carry out), 226 (the second interval τsStop216, boosting stops) and 222 (the 3rd intervals
τbp214, bypass diode conducting).
From the time t of the zero crossing of line period0202 arrive predetermined set time t1203 (in one example, its
Be for line period 3/32 part), boosted switch stops (deactivation) and first order output voltage VBoostingDecline (dips down
It is oblique 226).In time t1203, the point A 229 on boost output voltage, in boost output voltage VBoostingInput rectifying is reached just
String voltage VREC221 (the V in Fig. 1REC111), before, measure value V of the boost output voltage in this special timeReg, and by its
Be referred to as " boosting target " VBT230 preset expected booster voltage compares.
If VReg>VBT, show from t3205 arrive t4206 pressure rising time interval (boosting carries out the time 215) is more than institute
Need, and VBoostingIt is upper to move (cross and boost).In order to adjust, boosting carries out the time 215 will reduction.On the other hand, if
VReg<VBT, show from t3205 arrive t4206 pressure rising time interval (boosting carries out the time 215) is less than required, and VBoosting
Move down (owe boosting).In order to adjust, boosting carries out the time 215 will increase.
As first order output voltage VBoostingReach input rectifying sinusoidal voltage VRECWhen 221, boost output voltage is equal to input
Rectified sinusoidal voltage, and bypass diode (sometimes referred to as surge diode) Dbp132 become forward bias conducting.When
Between interval τbpIn, i.e., from t2204 to time t3205, boost output voltage follows input rectifying sinusoidal voltage VREC221, make
Obtain boost output voltage and input rectifying sinusoidal voltage VREC221 in time interval τbpI.e. from t2204 to time t3
It is roughly equal or almost equal during 205.
From time t3205 to time t4206 duration is referred to as boosting carries out time interval 215, at this section
Between, first order boost converter is run in response to the boosting order from boost pressure controller, and makes first order boost output voltage
VBoostingRaise (ramp up portion 224).First order boost converter 130 duration of operation τB215, this is by as described above
Control Vreg229 " pressure rising time adjuster " control block (such as the control block 397 in Fig. 3) control.VBoosting(ramp up portion
224) in t4The peak swing at place is not to be exceeded " boosting is maximum " voltage level 234.
Time interval τ is carried out in boostingBAfter 215, in time t4206, boost pressure controller stops to boosted switch element
(the Q in Fig. 1B125) switching signal.As boosted switch element QBWhen 125 deactivations and shutdown switch, first order output electricity
Pressure VBoostingOblique deascension 226 (energy in release boosting large value capacitor 138).VBoosting226 oblique deascension continues and by zero crossing
Point t '0207, until which reaches next half line cycles measurement point t of order pressure rising time regulation '1208, then in the time
t’2Reach input rectifying sinusoidal voltage V at 209 againREC 221。
Lower graph 250 is described
The conduction electric current of device, IConduction240.As long as the energy that boosting has stopped and boosted in output large value capacitor 138 discharges
(from circuit zero crossing t0202 to time t2204, in boost output voltage VBoostingReach input rectifying sinusoidal voltage VREC221 it
Before), no electric current is through first order boost converter.
From time t2204 arrive t3205, as bypass (surge) diode DbpDuring 132 conducting, first order boost converter
In 242 oblique deascension of electric current until the electric current reaches zero, and which can remain zero in short interval 244, and output loading energy
Amount is only provided by the output large value capacitor 138 that boosts.The duration at this time interval is represented as bypass diode and leads
Logical τbp 214。
From time t3205 arrive t4206, when boosted switch is activated and functions to, boost output voltage oblique ascension
And adjusted electric current 246 is transferred into second level flyback converter by first order boost converter (224).This time
The duration at interval is represented as boosting and carries out τB215.When first order boost converter shutdown switch and the output electricity that boosts
During pressure oblique deascension (226), no electric current is conducted by first order boost converter.The duration at this time interval is represented as rising
Pressure stops τStop216。
Fig. 3 A show the example of the control block for first order stepup transformer of teaching of the invention.Introduce in Fig. 3 A
Control block and control signal it is related to first order boost converter.The reference of all of control block and control signal is coupled to master
The ground wire in strategic point 301, Gnd lines 361.
From the letter of the 355 receives input alternating current circuits of signal HTS of the terminal 155 (as shown in fig. 1) of controller 150
Breath, the information are processed in main supply Synchronization Control block 390.Main supply Synchronization Control block 390 generates two output letters
Number.Beginning boost signal 392 is synchronous with alternating current circuit zero crossing, and the time started of first order boosted switch function is limited
At particular point in time (for example, the point B in Fig. 2) place of circuit sinusoidal half cycle phase.From the of main supply Synchronization Control block 390
Binary signal is sampled signal 391, and for limiting the sampling time, (the point A229 in Fig. 2, is zero to the sampled signal in one example
After intersection for line period 3/32 part) with measure boost output voltage and by its with boosting target voltage compare.
Flyback feedback terminal FFB 364 is coupled to the assists winding (in Fig. 1 173) of flyback transformer, and is delivered in
The negative part of the AC signal generated in assists winding, wherein this AC signal is represented to second level flyback converter (in Fig. 1
Input voltage 160), or in other words, the negative part of this AC signal is the defeated of first order stepup transformer (in Fig. 1 130)
Go out voltage.
Sampled signal 391 is informed with signal and is referred to as " VBoostingThe voltage model control block of model " 393 is sampled and is passed through
Main supply synchronization blocks 390 measure boost converter input voltage at the sampling time synchronous with circuit zero crossing.Boosting is defeated
Go out information of voltage to receive by signal FFB 364.
Voltage model control block " VBoostingModel " 393 generates the sampling V for going to " pressure rising time adjuster " block 397BoostingSignal
394." pressure rising time adjuster " block 397 is by from " VBoostingModel " control block 393 receives sampling VBoostingSignal 394, sampling is risen
Piezoelectricity pressure 394 is compared with the target booster voltage 396 received from " target booster voltage " block 395, and be based on difference come
Regulation pressure rising time (for example, boosts into line duration τB 215)。
The signal that control block " pressure rising time adjuster " 397 is gone to by the generation of " main supply synchronization " block 390 " starts to rise
Pressure " 392, boosting time started are defined and synchronous.By receiving " start boosting " signal 392 and will be from " VBoostingModel "
The sampling V of block 393BoostingCompared with the expected value signal 396 from " boosting target " block 395, " pressure rising time is adjusted signal 394
Device " block 397 generates " booste operation time " signal 398." booste operation time " signal 398 can be adjusted (adjust) for next
The pressure rising time of individual line half-cycle is " boosting is carried out " the duration τ in Fig. 2B215, with the output that compensates and boost
The expectation of voltage or the deviation of desired value.Regulation process may be fairly slow, takes up to some line periods.
Output signal 398 " booste operation time " from " pressure rising time adjuster " 397 is coupled to " boosting BJT controls
BJT drivers in system " block 399, with the boost function control BJT boosted switch elements for first order converter (in Fig. 1
QB125) run.By receiving from the boost current sensing signal of terminal 352 (in Fig. 1 152) and from terminal BFB
356 boost feedback signal, " boosting BJT controls " block 399 are generated for the base driver that boosts (terminal 358；In Fig. 1
158) and to boosting launch driver (terminal 354；Control signal 154) in Fig. 1." pressure rising time adjuster " block 397
" boosting BJT controls " block 399 can control or adjust boosted switch element run time (for example when, first order boosting is carried out
Between τB215).Boosted switch element run time can control the peak dot 225 of the boost output voltage in Fig. 2, then the boosting
Output voltage tends to predetermined target booster voltage falling after rise.In one example, it is to be understood that BJT boosted switch elements
Can be controlled advantageous by the independent drive signals of base terminal and emitter terminal to BJT switch elements.
Fig. 3 B show teaching of the invention for first with the example cascade of second level flyback converter
The example of the control block of level boosting-bypass converter (with so-called mixing boosting-bypass functionality).
Sketch map 300 in Fig. 3 B is illustrated by the first order boost converter and second level flyback converter structure for cascading
Into two-stage power conversion device in controller coupling more details.Teaching of the invention, the first order or prime boosting
Converter includes non-traditional or off-gauge operation with mixing boosting-bypass functionality.Second level flyback converter is received
The unadjusted output voltage of first order stepup transformer simultaneously generates adjusted flyback output voltage.Power converter 300 includes whole
Stream bridge 310, the rectifier bridge are coupled to receive V from incoming lineAC302 and 320 two ends of input filter condenser generate rectification
Voltage VREC 311。
Input voltage is applied to the terminal HTS 355 of controller 350 by resistor 305.In different examples, manage
Solution, terminal HTS 355 can be coupled to AC-input voltage VAC(for example, as shown in Figure 1), or it is coupled to rectification
Input voltage VREC(for example, as shown in figure 3b).Boost inductor LB312 have be coupled to controller terminal BFB
356 the second winding 315, the controller terminal BFB is as boost feedback signal to inductor current IL313 zero current enters
Row detection is controlled with the critical conduction mode (CrM) for carrying out booste operation.As explained in figure 1, boosted switch element QB
325 is controlled by the base drive signal respectively from terminal BBD 358 and BED 354 and emitter stage drive signal, with
In boosting into between-line spacing (for example, the duration τ in Fig. 2B, 246) during boosting behavior.Interval τ is carried out in boostingBPeriod,
Boosting output capacitor 338 passes through booster diode DB334 are charged.However, in bypass diode DbpConduction interval (Fig. 2
In duration τbp, 214) during, boosting output capacitor 338 pass through bypass diode Dbp314 directly from incoming line
It is charged, wherein bypass diode DbpConduction interval has stopped in boosted switch and boost output voltage has declined and just
(222 in Fig. 2 follow V to follow circuit sinusoidal waveformREC221) occur when.
Stop interval (the duration τ in Fig. 2 in boostingStop, 216) during, no electric current or energy transmission it is defeated to boosting
Go out capacitor 338, and the output capacitor 338 that boosts discharges or towards circuit sinusoidal voltage oblique deascension (in Fig. 2 226).
The first order boost output voltage at 338 two ends of capacitor is applied to flyback transformer 370.Flyback transformer 370
Armature winding 371 be coupled to flyback switch element, the flyback switch element in one example can for Mosfet switch MF
365.In the sense resistor 363 with reference to mainly 301, sensing passes through the electric current of flyback switch element, and the electric current passes through
The terminal FCS362 of controller 350 is coupled to " flyback control " block 389.Control terminal (for example, the grid of flyback switch element 365
Extreme son) the terminal FGD 366 of controller 350 is coupled to, and receive the flyback raster data model letter from flyback control block 389
Number, to perform switch in response to flyback feedback signal FFB 364 and flyback converter sensing signal FCS 362, so as to pass through secondary
Winding 372 adjusts the flyback output on output circuit 380.
Assists winding 373 on flyback transformer 370 is provided on the terminal 364 of controller 350 to be changed for inverse-excitation type
Feedback signal FFB of device.From assists winding 373 signal FFB 364 be alternating-current pulse, its negative part be provided as boosting output
The flyback input voltage information of voltage.As secondary windings 372 and assists winding 373 have on the contrary relative to armature winding 371
Direction, the positive part from the exchange FFB signals of assists winding 373 represents phase turn-off time in flyback switch element 365
Between be transferred to the energy of secondary windings 372, and be used for flyback output voltage and electric current is adjusted.
For controller 350 different control blocks dc source also via assists winding 373, by increasing rectification two pole
Pipe 374 and it is connected across terminal VDD368 capacitor 375 is generating, and the dc source refers to mainly 301.Assists winding
373 and for controller 350 all control signals refer to earth bus 361 and mainly 301.
In one example, boosting rectifier control block " the main supply synchronization " 390, " V for illustrating in Fig. 3 BBoostingModel " 393, " mesh
Mark booster voltage " 395, " pressure rising time adjuster " 397 and " boosting BJT control " 399 with Fig. 3 A in illustrate they
Corresponding boosting rectifier control block identical function.
Description to the shown example of the present invention above, including the content described in summary, it is no intended to be exhaustive
Property or exact form disclosed is limited.Although describing the concrete reality of the present invention herein for exemplary purposes
Scheme and example is applied, but on the premise of the broad spirit and scope without departing from the present invention, various equivalent modifications are all
It is possible.In fact, it is understood that specifically voltage, electric current, frequency, power range values, time etc. are in order at explanation mesh
And offer, and teaching of the invention, can also adopt other values in other embodiments and example.According to the above
Detailed description, can to the present invention example carry out these modification.Term used in appended claims should not be solved
It is interpreted as limiting the invention to the specific embodiment disclosed in specification and claims.Conversely, scope is completely by appended
Claims determine, and claims should be understood principle according to set claim and explain.Correspondingly, this explanation
Book and accompanying drawing should be considered illustrative and not restrictive.
Claims (14)
1. boosting-bypass the converter of the first order in a kind of device as two-stage power conversion, including：
Boost inductor, the boost inductor is coupled in the input of the boosting-bypass converter and the boosting-bypass turns
Between the output of parallel operation, wherein, the input voltage of the boosting-bypass converter is to be coupled to turn in the boosting-bypass
The rectification incoming line sinusoidal voltage that the input of parallel operation receives；
Bypass diode, the bypass diode are coupled in the input of the boosting-bypass converter and the boosting-side
Between the output of road converter；And
The boosted switch element of the boost inductor is coupled to, wherein, the boosted switch element is coupled to described defeated
Each line half cycle interim the first interim for entering voltage is enabled so that at the output of the boosting-bypass converter
Output voltage raise, wherein, the boosted switch element is coupled in each line half cycle described in the input voltage
The second interim interim disables, and wherein, the output voltage of the boosting-bypass converter is coupled to when the liter
The output voltage of pressure-bypass converter is more than electric towards the input in second interim during input voltage
Drops, wherein, the output voltage of the boosting-bypass converter is coupled to when the input voltage and the output
The of each line half-cycle described in the input voltage when voltage is roughly equal and the boosted switch element is disabled
Three interims followed the input voltage, wherein, in the 3rd interim energy by the bypass diode in institute
State.
2. boosting according to claim 1-bypass converter, also includes：
Boosting output large value capacitor, the boosting output large value capacitor are coupled to the boosting-bypass converter
The output；And
Boosting commutation diode, the boosting commutation diode are coupled in the boost inductor with the boosting-bypass conversion
Between the boosting output large value capacitor at the output of device, wherein, the bypass diode is coupled in the liter
The input of pressure-bypass converter exports Large Copacity with the boosting at the output of the boosting-bypass converter
Between capacitor, the boost inductor, the boosted switch element and the boosting commutation diode bypass is thought.
3. boosting according to claim 1-bypass converter, wherein, the boosted switch element includes that dipole is brilliant
Body pipe (BJT).
4. boosting according to claim 1-bypass converter, wherein, in the output of the boosting-bypass converter
Department level is associated with second level DC-to-dc converter, by the unregulated voltage at the output of the boosting-bypass converter
Be converted to the adjusted voltage at the output of the second level DC-to-dc converter.
5. boosting according to claim 4-bypass converter, wherein, the second level DC-to-dc converter is flyback
Formula converter.
6. boosting according to claim 1-bypass converter, also including voltage model control block, the voltage model control
Clamp dog is coupled to make the switch synchronization of the boosted switch element in response to zero crossing elimination in the input voltage.
7. boosting according to claim 6-bypass converter, wherein, the voltage model control block is further coupled in pairs
With the alternating-current pulse inducted in the assists winding of the flyback transformer of the flyback converter of the boosting-bypass converter cascade
A part response.
8. boosting according to claim 6-bypass converter, also including pressure rising time adjuster, the pressure rising time adjusts
Section device is coupled to receive the boost output voltage model signals from the voltage model control block, wherein, during the boosting
Between adjuster be coupled in response to the boost output voltage model signals from the voltage model control block generate
Booste operation time signal, makes the output voltage liter at the output of the boosting-bypass converter to adjust
First interval of each line half-cycle of the high, input voltage.
9. a kind of power converter, including：
Boosting-bypass converter, the boosting-bypass converter include：
Boost inductor, the boost inductor is coupled in the input of the boosting-bypass converter and the boosting-bypass turns
Between the output of parallel operation, wherein, the input voltage of the boosting-bypass converter is to be coupled to turn in the boosting-bypass
The rectification incoming line sinusoidal voltage that the input of parallel operation receives；
Bypass diode, the bypass diode are coupled in the input of the boosting-bypass converter and the boosting-side
Between the output of road converter；And
The boosted switch element of the boost inductor is coupled to, wherein, the boosted switch element is coupled to described defeated
The first interim for entering each line half-cycle of voltage is enabled so that at the output of the boosting-bypass converter
Output voltage is raised, and wherein, the boosted switch element is coupled in each line half-cycle described in the input voltage
In the second interim disable, wherein, the output voltage be coupled to when the output voltage be more than the input voltage
When decline towards the input voltage in second interim, wherein, the output voltage is coupled to when the input
Voltage and when the output voltage is roughly equal and the boosted switch element is disabled described in the input voltage each
3rd interim of line half-cycle follows the input voltage, wherein, in the 3rd interim energy by described
Bypass diode is transmitted between the input and the output of the boosting-bypass converter；And
With the second level flyback converter of the boosting-bypass converter cascade, wherein, the flyback converter includes coupling
The input of the output of the boosting-bypass converter is connected to, wherein, the flyback converter also includes：
Energy transfer element, the energy transfer element are coupled in the input of the flyback converter and the inverse-excitation type
Between the output of converter；
Flyback switch element, the flyback switch element are coupled to the energy transfer element；And controller, the controller
It is coupled to control the switch of the flyback switch element, is passed through from the input of the flyback converter with adjusting energy
The transmission of the output of the energy transfer element to the flyback converter.
10. power converter according to claim 9, wherein, the boosting-bypass converter also includes：
Boosting output large value capacitor, the boosting output large value capacitor are coupled to the boosting-bypass converter
The output；And
Boosting commutation diode, the boosting commutation diode are coupled in the boost inductor with the boosting-bypass conversion
Between the boosting output large value capacitor at the output of device, wherein, the bypass diode is coupled in the liter
The input of pressure-bypass converter exports Large Copacity with the boosting at the output of the boosting-bypass converter
Between capacitor, the boost inductor, the boosted switch element and the boosting commutation diode bypass is thought.
11. power converters according to claim 9, wherein, the boosted switch element includes bipolar junction transistor
(BJT), and wherein, the flyback switch element includes switch mosfet.
12. power converters according to claim 9, wherein, the boosting-bypass converter also includes voltage model control
Clamp dog, the voltage model control block are coupled to make the boosted switch in response to zero crossing elimination in the input voltage
The switch synchronization of element.
13. power converters according to claim 10, wherein, the energy transfer element of the flyback converter
Including flyback transformer, the flyback transformer includes armature winding, secondary windings and assists winding, wherein, the voltage-mode
The part response of the alternating-current pulse that type control block is inducted in being further coupled to the paired assists winding.
14. power converters according to claim 10, wherein, the boosting-bypass converter also includes pressure rising time
Adjuster, the pressure rising time adjuster are coupled to receive the boost output voltage model from the voltage model control block
Signal, wherein, the pressure rising time adjuster is coupled to defeated in response to the boosting from the voltage model control block
Go out voltage model signal to generate booste operation time signal, to adjust for making the described defeated of the boosting-bypass converter
The output voltage in source is elevated, the input voltage each line half-cycle first interval.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/854,266 | 2015-09-15 | ||
| US14/854,266 US9866122B2 (en) | 2015-09-15 | 2015-09-15 | Hybrid boost-bypass function in two-stage converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106533209A true CN106533209A (en) | 2017-03-22 |
| CN106533209B CN106533209B (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610827173.XA Active CN106533209B (en) | 2015-09-15 | 2016-09-14 | Hybrid boost-bypass converter in two-stage converter and power converter |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US9866122B2 (en) |
| EP (1) | EP3145067A3 (en) |
| JP (1) | JP2017060385A (en) |
| CN (1) | CN106533209B (en) |
Cited By (2)
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|---|---|---|---|---|
| CN108768190A (en) * | 2018-07-06 | 2018-11-06 | 深圳奥特迅电力设备股份有限公司 | Circuit, high frequency switch power with wide input voltage range, control method |
| CN109889062A (en) * | 2017-11-30 | 2019-06-14 | 英飞凌科技奥地利有限公司 | The method of electric power converter and control electric power converter |
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| US10158291B1 (en) * | 2015-11-17 | 2018-12-18 | Bel Power Solutions Inc. | DC/DC converter for high voltage applications with input voltage boost, input capacitor discharge and output capacitor compensation modes |
| TWI624144B (en) * | 2016-09-19 | 2018-05-11 | 國立成功大學 | Flyback converter and controlling method thereof |
| US11637506B2 (en) * | 2018-01-10 | 2023-04-25 | Polaris Industries Inc. | Low loss shunt regulator |
| TWI678874B (en) | 2018-09-19 | 2019-12-01 | 宏碁股份有限公司 | Power supply circuit with improved power factor |
| US10686381B1 (en) | 2019-02-27 | 2020-06-16 | Analog Devices International Unlimited Company | Synchronous boost regulator circuit with pass-through operation control |
| TWI704838B (en) * | 2019-07-29 | 2020-09-11 | 宏碁股份有限公司 | Driving device |
| US11418125B2 (en) | 2019-10-25 | 2022-08-16 | The Research Foundation For The State University Of New York | Three phase bidirectional AC-DC converter with bipolar voltage fed resonant stages |
| US11418121B2 (en) | 2019-12-30 | 2022-08-16 | Power Integrations, Inc | Auxiliary converter to provide operating power for a controller |
| US11258369B2 (en) | 2020-02-19 | 2022-02-22 | Power Integrations, Inc. | Inductive charging circuit to provide operative power for a controller |
| CN113394972A (en) * | 2020-03-12 | 2021-09-14 | Oppo广东移动通信有限公司 | Power supply conversion circuit |
| KR20220012729A (en) * | 2020-07-23 | 2022-02-04 | 삼성전자주식회사 | Electronic apparatus and control method thereof |
| WO2022191421A1 (en) * | 2021-03-08 | 2022-09-15 | 삼성전자주식회사 | Electronic device and control method |
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Also Published As
| Publication number | Publication date |
|---|---|
| US20180083542A1 (en) | 2018-03-22 |
| CN106533209B (en) | 2021-01-29 |
| JP2017060385A (en) | 2017-03-23 |
| US20170077818A1 (en) | 2017-03-16 |
| US9866122B2 (en) | 2018-01-09 |
| US10020742B2 (en) | 2018-07-10 |
| EP3145067A2 (en) | 2017-03-22 |
| EP3145067A3 (en) | 2017-03-29 |
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